MCP servers that ship as code — a repository or a package you install and run locally (usually over stdio). They have no hosted endpoint, so we cannot probe or grade them: instead each one shows its repository, install command, license, stars and when it was last updated.
Collected from GitHub repositories and npm, PyPI, Cargo, Go, Maven, NuGet and RubyGems packages tagged as MCP servers, the official MCP Registry, Docker's MCP catalog, ModelScope, Baidu MCP World, Cline and other public directories; one entry per repository. A server that also offers a hosted endpoint is listed under Remote instead. These entries are not counted in our reachability, verification or readiness statistics.
-
@agenson-horrowitz/structured-data-validator-mcpgithub.com/agenson-tools/structured-data-validator-mcpupdated this year
MCP server for validating, transforming, and normalizing structured data - built specifically for AI agents
npm MIT -
MCP-based data diagnostics and validation tool designed to detect data quality issues and deliver structured, actionable diagnostic reports.
MIT ★ 1 -
@neivi/iqx-lookup-mcp-servergithub.com/neivi-it/iqx-lookup-mcp-serverupdated this year
MCP server for IQX Lookup Platform — 12 data validation tools for AI agents: email, phone, EU VAT (VIES), IBAN, BIC, DNS, SSL, IP geolocation, and more. Free tier: 10K req/month.
npm Apache-2.0 -
Beta — Local-first visual data quality tool for Excel/CSV/TSV. Visual canvas, built-in AI assistant, CLI + MCP server. All validation runs on your machine.
Apache-2.0 ★ 3 -
JSON-LD / Schema.org structured-data validator API + MCP server. Never fetches URLs.
MIT -
mcp-schema-toolsgithub.com/rog0x/mcp-schema-toolsupdated this year
MCP server for schemas: generate JSON Schema from data, generate TypeScript types, validate data, create mock data from schema, compare schemas Install: npx @rog0x/mcp-schema-tools
NOASSERTION -
A comprehensive Model Context Protocol server for accessing Protein Data Bank (PDB) with 28 structural biology tools for protein structure analysis, validation, and comparison
npm MIT -
@agenson-horrowitz/agent-output-guard-mcpgithub.com/agenson-tools/agent-output-guard-mcpupdated this year
Agent Output Guard MCP Server - Validate and verify data from other agents before acting on it. Zero LLM costs, pure computation. Solves coordination failures in multi-agent systems.
npm MIT -
Daily, plain-language GTFS quality scorecards for small transit agencies: the grade, the three fixes that matter most, and why. 2,600+ curated Schedule and Realtime feed records (US, Canada, reviewed canaries), 2,100+ scorecards built on MobilityData's validator. Free CLI, read API, GitHub Action gate, MCP server, alerts and open data.
Apache-2.0 ★ 1 -
intelligentdata-mcpgithub.com/aagarwal-apexanalytix/intelligentdata-mcpupdated this year
MCP server for the Intelligent Data API — validate addresses, tax IDs, bank accounts, and more directly in Claude Desktop
MIT -
data-sanitizer-mcpgithub.com/marilynceo/data-sanitizer-mcpupdated this year
Clean and validate data for AI agents. Sanitize JSON, CSV, emails, dates, text, detect PII, normalize phone numbers. Built for the AI agent economy.
-
MCP server: pay-per-call Nigerian validation and reference data for AI agents (x402, USDC, no API keys).
MIT -
MCP server for EuroValidate — validate EU VAT numbers (VIES), IBANs, EORI customs numbers and look up company data from LLM agents
pypi MIT -
apitier-mcp-servergithub.com/apitier/apitier-mcp-serverupdated this year
MCP server exposing 10 APITier utility APIs as AI agent tools — email/phone/VAT validation, UK postcodes, India pincodes, barcode/QR generation, data conversion
MIT -
data-forge-mcpgithub.com/angrysky56/data-forge-mcpupdated this year
Data-Forge is a Model Context Protocol (MCP) server that transforms any LLM into a powerful Data Science Assistant. It provides a suite of high-performance tools for data loading, cleaning, validation, profiling, feature engineering, and visualization.
MIT ★ 2 -
The Data Control Plane for AI Agents — acquire, validate, and land data over MCP with scoped keys, approval gates, and an audit log. Self-hosted, open source.
pypi Apache-2.0 ★ 14 -
eu-company-mcp-servergithub.com/AiAgentKarl/eu-company-mcp-serverupdated this year
MCP server for EU company data — GLEIF company search, VAT validation, Eurostat business statistics
MIT ★ 6 -
@fairquery/agent-trust-mcpactive
Fairquery Agent Trust & Data Safety MCP server: PII/secret redaction, email validation, sanctions screening, dependency checks and a local MCP server pre-check for AI agents. Free local tools + optional paid Apify-backed deep tools.
npm MIT -
@attestwire/mcpactive
stdio bridge to the Attestwire MCP server — thirteen e-invoicing tools, including reviewed invoice repair, Peppol recipient lookup and live VIES verification: validate invoice data, or a UBL 2.1 / UN-CEFACT CII invoice file, against XRechnung and Peppol B
npm MIT -
AISchemaGate validates and repairs structured LLM output against a contract, plus DataContractGate data contracts. Repair uses the violation fields from that check (min, max, pattern, enum, compliance_mode). The contract checks values a JSON Schema or Pyd
npm MIT -
MCP server for walkerOS data-elb HTML tagging — generate, parse, and validate tracking attributes with real DOM parsing
npm MIT -
mdbpgithub.com/dorukyelken/mdbpupdated this year
Model Database Protocol — intent-based, secure database access for LLMs with schema validation, policy engine, data masking, and MCP server support
pypi MIT -
Model-Database-Protocolgithub.com/DorukYelken/Model-Database-Protocolupdated this year
Model Database Protocol — intent-based, secure database access for LLMs with schema validation, policy engine, data masking, and MCP server support
★ 8 -
The ETIM classification model as clean JSON — convert, validate, generate TypeScript types, search, and serve to AI agents over MCP. Ships no ETIM data.
NOASSERTION -
Production-validated MCP server for Confluence Data Center - 11 AI-tested tools with enhanced version management and complete API compatibility
npm MIT -
The high-performance, local-first data engine for developers and AI agents. Format, validate, and optimize data for LLM contexts without ever leaving your browser. Zero-server. Zero-leak.
MIT ★ 4 -
Ask US Census data questions in plain English, with a validation gate between generated SQL and DuckDB. Includes public county pages and an MCP server.
MIT ★ 3 -
mcp-json-toolsgithub.com/rog0x/mcp-json-toolsupdated this year
MCP server for JSON/data tools: validate against schema (Ajv), diff objects, transform/pick/flatten, CSV↔JSON, YAML↔JSON conversion. Install: npx @rog0x/mcp-json-tools
MIT -
etim-jsongithub.com/m-heath-consulting/etim-jsonupdated this year
The ETIM classification model as clean JSON — convert, validate, generate TypeScript types, search, and serve to AI agents over MCP. Ships no ETIM data; converts the model you are licensed to download.
npm MIT -
@denispaul/india-business-mcp-servergithub.com/denispaul2406/india-business-mcp-serverupdated this year
An MCP server for Indian business data: IFSC, PIN code, GSTIN, PAN validation
npm mit -
Offline ISO 20022 payment tools for AI assistants: explain pacs/camt messages in plain language, scrub customer data before sharing, check CBPR+ readiness, validate SSI files and check payments against your own SSIs, validate and build IBANs, check BIC sy
npm MIT -
End-to-end ML toolkit automating the complete workflow — data profiling, preprocessing, feature engineering, model selection, training, validation, explainability, drift monitoring, fairness checks, and interactive HTML reporting. Includes a full CLI for zero-code ML pipelines. Python 3.10+.
MIT ★ 16 -
MCP Server using TypeScript and JavaScript made with official MCP docs handling US Weather data having context for two tools - showing weather forecast and weather alerts for US based location. Used Zod for data validation and architectured two folders - src and build , development (ts) and production (js) respectively.
-
eu-company-mcp-servergithub.com/aiagentkarl/eu-company-mcp-serverupdated this year
MCP server for EU company data — GLEIF search, VAT validation, Eurostat statistics, sanctions screening, insolvency search, beneficial ownership
pypi MIT -
cogwork-mcp-serversgithub.com/cloggedDrain/cogwork-mcp-serversupdated this year
8 MCP servers for AI agents: PDF generation, QR/GS1 barcodes, WCAG accessibility scans, image processing, link previews, data validation, EN 16931 e-invoices
MIT -
otel-mcpgithub.com/krackenservices/otel-mcpupdated this year
When code is written, modified, or debugged by AI agents, those changes must be validated and reasoned about using structured observability data — not unstructured logs or stdout.
★ 2 -
MCP (Model Context Protocol) server for the Casper Network blockchain. Gives any AI assistant or MCP-compatible tool access to on-chain data — accounts, blocks, deploys, validators, smart contracts, tokens, NFTs, transfers, and network status.
MIT ★ 1 -
mcp-polish-bizgithub.com/M8T-Jacob/mcp-polish-bizupdated this year
MCP server for Polish business data: NIP/PESEL validation, VAT whitelist, VIES, NBP exchange rates. For Claude, Cursor & other AI agents.
MIT -
vaultjson-mcpgithub.com/AlexeySamosadov/vaultjson-mcpupdated this year
MCP server giving AI agents local JSON tools — validate, format, query-by-path (free), plus deep-merge & diff (Pro). Data never leaves the machine.
NOASSERTION -
Professionell MCP server för att hämta, söka, analysera och jämföra data från Riksdagen och Regeringskansliet. Innehåller 27 verktyg och 5 resources med förbättrad säkerhet och response validation.
npm MIT -
MCP fetch server with correct SSRF defense: resolve once, validate and pin the resolved IP, re-check every redirect. Returns clean markdown framed as untrusted data.
MIT ★ 1 -
High-performance MongoDB Model Context Protocol (MCP) server optimized for LLMs - enables AI agents to safely and efficiently query and manipulate MongoDB data with type safety, schema validation, and controlled access patterns
npm MIT -
MCP-first server for Indian equity research with local CSV/ Parquet data, price history, ticker validation, weekly performance, and Nifty 50 rankings.
MIT -
MCP server for the Google Sheets API: read, write and append ranges, manage sheets, formatting, conditional formatting, data validation, protected ranges, tables, charts and sharing
MIT ★ 1 -
MCP server that turns a folder of Spanish invoice PDFs into validated data: classify, extract NIF/IVA/IRPF with arithmetic checks, and summarize IVA per quarter. Local, read-only.
MIT -
Mechanically validated frontend aesthetics for AI agents: 89-palette evidence library, OKLCH generation, WCAG/APCA contrast, color-blind-safe data colors, AI-slop detection, theme packs, W3C design tokens. Skill + MCP server.
MIT -
@invapi/mcp-servergithub.com/invapi-org/invapi-mcpupdated this year
Invoice MCP server — extract structured data from PDF & image invoices, create e-invoices (UBL, CII, ZUGFeRD/Factur-X), convert between formats including Excel, and validate against EN 16931.
npm MIT -
de-dsgvo-check-mcpgithub.com/marilynceo/de-dsgvo-check-mcpupdated this year
Comprehensive DSGVO/GDPR compliance audits for German/EU businesses: website compliance scan (Impressum, Datenschutzerklu00e4rung, Cookie Consent), Art. 30 processing records (VVT), data breach readiness, third-country transfer assessment, TOM validation, and overall scorecard. For DPOs, legal teams, and compliance automation.
-
MCP server that turns a folder of Spanish invoice PDFs into validated, structured data: classify documents, extract NIF/IVA/IRPF/totals with arithmetic checks, and summarize IVA soportado/repercutido per period. Local, read-only, no API keys.
npm MIT -
eu-pii-redactgithub.com/JulianJohansen/eu-pii-redactno update data
Redact European personal data before it reaches an LLM, and restore it later. Replaces names, national ID numbers from 21 EU/EEA countries (validated by check digit and birth date), IBANs, cards, EU VAT numbers, emails, phones and IPs with placeholders like [PERSON_1]. redact_file and restore_file process files without the personal data ever entering the conversation. Needs a RapidAPI key for the EU PII Redaction API; the free plan gives 500 requests a month: https://rapidapi.com/JulianJohansen/api/eu-pii-redaction
smithery -
AINative Browser Agent MCP Server — 6 AI-powered browser automation tools for web interaction, structured data extraction, page validation, multi-step tasks, and memory enrichment. Auto-detects ZeroLocal vs Cloud.
npm MIT -
yaktool-gs1-mcpactive
GS1 barcode data as an MCP server: build a GS1-128 / GS1 element string from Application Identifiers with FNC1 placement handled, generate a GS1 DataMatrix (ECC200) as SVG, and validate the eight GS1 identification keys beyond GTIN — SSCC, GLN, GRAI, GIAI
npm MIT -
Model Context Protocol (MCP) server for Belgian Electronic Invoicing (Peppol BIS 3.0 / PINT-BE / Mercurius). Provides tools to validate, generate, and transform UBL 2.1 e-invoices, and look up BCE/KBO enterprise data and Peppol participants. Vendor-neutral: builds and signs locally; the Peppol access point is interchangeable.
Apache-2.0 -
Fashion E-Commerce Intelligencegithub.com/alexgenovese/ecommerce-fashion-market-analysisno update data
# Fashion E-Commerce Intelligence MCP Server Empower your AI agents, copilots, and assistants with vertical domain-specific fashion intelligence. Built by [alexgenovese.com](https://alexgenovese.com), this Model Context Protocol (MCP) server provides automated **SEO auditing, category trend research, DTC demand forecasting, CRM segment enrichment, and campaign creative generation**—designed natively for Cursor, Claude Desktop, Claude Code, and any MCP-compatible environment. --- ## ⚡ What It Does | Capability | Without this server | With Fashion MCP | |---|---|---| | **SEO Auditing** | Manual checklists, generic advice | Automated **0-100 score** across 5 dimensions with fashion-specific validation (fit, material, color, season, schema, OG, Twitter Cards). | | **Trend Research** | Generic search queries | Deep category-level trend intelligence (trending keywords, colors, silhouettes, price tiers, market fit, confidence). | | **Demand Forecasting** | Spreadsheets & gut feel | Explainable weighted-rule forecast model: `baseline × trend × media × retention × inventory × seasonality` with backtesting. | | **CRM Segment Enrichment** | Static email lists | Customer segments enriched with trending colors/silhouettes/keywords, audience clusters, and ready-to-send targeted messaging. | | **Campaign Creative** | Standard copywriters per channel | Platform-specific campaign themes, hooks, value propositions, and ready-to-use creative briefs grounded in real-time trend data. | --- ## 🔧 Exposed Tools - `product_seo_audit`: Audit any fashion product listing for SEO best practices, structured schema, meta tags, and fashion relevance (fit, size, material). - `fashion_trend_analysis`: Analyze fashion trend data mapped from search engine and social media queries. *(Receives search data input seamlessly, no API key required)*. - `fashion_category_demand_outlook`: Get a rapid, light demand pulse check for a specific product category in a target market and season. - `fashion_dtc_forecast_analysis`: Generate complete DTC demand forecasts with scenario planning (base/upside/downside) and stock-out/overstock risk analysis. - `fashion_customer_trend_enrichment`: Map trending keywords, colors, and silhouettes onto existing CRM customer segments for targeted email/SMS campaigns. - `fashion_campaign_theme_recommendation`: Recommend conversion-optimized ad campaign themes, hooks, and creative briefs for Meta, Google, TikTok, or Email. --- ## 🔐 Privacy & Technical Features - **No API Keys Required:** All analysis, SEO audits, demand forecasts, and CRM enrichment tools run locally with the data you supply. Upstream search data for `fashion_trend_analysis` uses your existing Tavily MCP server. - **Explainable Outputs:** Every tool returns explicit `assumptions[]`, `dataGaps[]`, and `confidence` scores, so your agent always understands the reasoning behind recommendations. - **Zero-Config Local Cache:** Uses a local SQLite persistence layer (`~/.fashion-mcp/store.db`) to cache snapshots, feature stores, and forecast actuals for backtesting. ## 💻 Local Installation To install this stdio-based server locally via Smithery: ```bash npx smithery install alexgenovese/ecommerce-fashion-market-analysis ```
smithery -
Validates and formats phone numbers, email addresses and postal addresses for any country.
MIT ★ 1 -
doloop-machinegithub.com/ekras-doloop/doloop-machineupdated this year
Distributed Collection, Local Intelligence - Stop LLMs from hallucinating with Kong in the Loop architecture
MIT ★ 1 -
Intelligent AI Agents to ensure accurate, unique, and reliable customer data
pypi MIT -
MCP server that catches fake backtests before you trust them: deflated Sharpe ratio, backtest overfitting (CSCV/PBO), data-snooping tests (White's Reality Check, Hansen's SPA), lookahead checks and pipeline placebos. 20 tools for Claude, Cursor and any MCP client; on npm, the MCP Registry and hosted at canlicapital.com/mcp.
MIT ★ 1 -
"Sniffs out bad data"
Apache-2.0 ★ 21 -
Zero-Configuration Data Quality Framework Powered by Polars
pypi Apache-2.0